Purolator Liquid Process Depth-Clear™ D Series Filter Housing is designed to meet individual customer requirements for a wide variety of applications in the food, petroleum, and chemical industries. This seal-less housing works in conjunction with the bagged filter that supplies all sealing requirements. The housing simply provides structural integrity to your filtration operations. Features and Benefits Process fluid enters the housing at the top of the filter bag, flows down into the inlet port of the bag contained in the housing. The unfiltered liquid pressurizes the bag causing the bag to expand and conform to the interior of the housing. The liquid then flows through the depth mediaretaining impurities, through to the center core and eventually out the core discharge port.